function addFavorite() {
	if (document.all) {
		try {
			window.external.addFavorite(window.location.href, document.title);
		} catch (e) {
			alert("加入收藏失败，请使用Ctrl+D进行添加");
		}

	} else if (window.sidebar) {
		window.sidebar.addPanel(document.title, window.location.href, "");
	} else {
		alert("加入收藏失败，请使用Ctrl+D进行添加");
	}
}

var setHpage = function(obj) {
	var url = window.location.href;
	try {
		obj.style.behavior = 'url(#default#homepage)';
		obj.setHomePage(url);
	} catch (e) {
		if (window.netscape) {
			try {
				netscape.security.PrivilegeManager
						.enablePrivilege("UniversalXPConnect");
			} catch (e) {
				alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入 about:config 并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为'true',双击即可。");
			}
			var prefs = Components.classes['@mozilla.org/preferences-service;1']
					.getService(Components.interfaces.nsIPrefBranch);
			prefs.setCharPref('browser.startup.homepage', url);
		}
	}
};

$(document).ready(
		function() {
			var $backToTopTxt = "回顶部", $backToTopEle = $(
					'<div class="backToTop"></div>').appendTo($("body")).text(
					$backToTopTxt).attr("title", $backToTopTxt).click(
					function() {
						$("html, body").animate({
							scrollTop : 0
						}, 120);
					}), $backToTopFun = function() {
				var st = $(document).scrollTop(), winh = $(window).height();
				(st > 0) ? $backToTopEle.show() : $backToTopEle.hide();
				// IE6下的定位
				if (!window.XMLHttpRequest) {
					$backToTopEle.css("top", st + winh - 166);
				}
			};
			$(window).bind("scroll", $backToTopFun);
			$(function() {
				$backToTopFun();
			});
		});